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Older adults (fifty-five to eighty) who walked for forty minutes three days a week showed significant increases in the size of their hippocampus, enhancing memory. Exercise has also been shown to prevent age-related cognitive decline by increasing blood flow to the brain, causing increases in the size of the prefrontal cortex and improvements in executive control, memory, and critical thinking

Retirement can kill you. According to a study by the Swiss economist Josef Zweimuller, every extra year of early retirement takes about two months off your life expectancy. If you're saving up your good times till you retire, it may be too late. Try to live a more stress-free, relaxed, healthy life now so that you will be able to enjoy it later when you retire.

There is a lovely French proverb that says that we spend the first half of life in longing for the second and the second half regretting the first.